thermostat
THUR-muh-stat
/ˈθɜːrməstæt/
A device that automatically regulates temperature, or that activates a device when the temperature reaches a certain point.
Refers to the control interface and sensor, not the actual heating or cooling unit itself.
The story behind the word. Coined in 1830 by Scottish chemist Andrew Ure from the Greek words therme (heat) and statos (standing or stationary). The word literally means 'that which makes heat stand still,' reflecting its job of keeping temperatures stable.
Word relationships
- temperature controller: A more descriptive, technical synonym used in industrial contexts.
Commonly confused with
- thermometer: A thermometer only measures temperature, whereas a thermostat actively controls and regulates it.
Word family
- thermostatic (adjective): Relating to or controlled by a thermostat.
- thermostatically (adverb): In a manner controlled by a thermostat.
Collocations
- programmable thermostat
- adjust the thermostat
- smart thermostat
Example sentences
- "He turned down the thermostat to save energy while they were away on vacation." Adjusting home temperature.
- "The new smart thermostat learns your daily routine and adjusts the temperature automatically." Smart home technology.
Memory hook
Think of 'thermo' (heat) and 'stat' (static/staying the same). Keep the heat static with a thermostat.
When not to use
Do not use to refer to the heater or air conditioner directly, only the control device.
Fun facts
- The modern bimetallic thermostat was invented by Albert Butz in 1885, which led to the founding of the company that eventually became Honeywell.
Related words
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